The RENTHAL 428 R1 Works Chain, part number C277, is specifically designed for high-powered mini racing machines with up to 100cc capacity that utilize a 428 non-O-ring chain. This premium chain features shot-peened alloy steel side plates and extended bushings that significantly reduce friction between the outer and inner link plates. This design maximizes power transmission, ensuring that you get the most out of your racing machine. With an impressive average tensile strength of 4,496 lb., the RENTHAL 428 R1 chain is built to withstand the rigorous demands of mini racing. It incorporates case-hardened alloy steel bearing pins, providing maximum resistance to wear and tear. Additionally, the striking gold-colored side plates not only enhance the aesthetic appeal but also help in reducing corrosion. Complete your racing setup with the perfect match for Renthal sprockets and enjoy the included clip type link for easy installation. Features: * Designed for high-powered mini racing machines up to 100cc capacity * Shot-peened alloy steel side plates enhance durability * Extended bushings reduce friction for maximum power transmission * Ultra-high 4,496 lb. average tensile strength for superior performance * Case-hardened alloy steel bearing pins resist wear * Gold-colored side plates help reduce corrosion * Compatible with Renthal sprockets for optimal performance * Includes clip type link for easy installation